<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<style>
  .content {
    display: flex;
    justify-self: center;
    align-content: center;
  }
  .mid-info{
    display: flex;
    height: 90px;
    width: 90px;
    background-color: #0aa1ed;
  }
  .mid-menu{
    display: flex;
    width: 90px;
    height: 90px;
    background-color: #0dcaf0;
  }
</style>
<body>
<div class="content" >
  <section class="mid-info"></section>
  <section class="mid-menu"></section>
</div>
</body>
</html>